I am getting closer and closer to breathing some life into this beast. This may be yet another roadblock.

175 tank
total water volume will be around 220-230
4x250 halides

Set up is in basement where it is a little cooler. I was hopeing to get away with a few fans.

Any thoughts?

Thanks!

DrNecropolis

08-19-2009, 3:25 PM

I dont have a chiller... 2x250 with bulbs about 4-5" off the water.. Granted it runs on the warm side in the summer 80-81..

joshl

08-19-2009, 3:27 PM

on my 75 with a 20 gallon sump i am running 2x250 mh with no chiller and it is staying around 77-78 with the bulbs 10 inches off the water

Akopley

08-19-2009, 3:27 PM

i am runnning 1x250 on a 45 gallon with just a fan and stay under 80.

Darren24

08-19-2009, 3:27 PM

Same here. 2 x 250w. No chiller just a ceiling fan. :)

bexi20

08-19-2009, 3:30 PM

I run two 250w with four 54w T5

Spike

08-19-2009, 3:46 PM

I do not have chiller, just a fan. You have seen my basement tank. I am running 3-250's about 9" above the water. Using only a fan to cool timed to come on after MH.

blu_devl_06

08-19-2009, 3:51 PM

2x 250 MH, no fan, no chiller, 6" deep frag tank, have to heat it to 78-79. Wierd, I know, but it is what it is!:confused2:

DrNecropolis

08-19-2009, 3:52 PM

2x 250 MH, no fan, no chiller, 6" deep frag tank, have to heat it to 78-79. Wierd, I know, but it is what it is!:confused2:
Considering that they are about 30" off the tank.. thats no real surprise...lol

blu_devl_06

08-19-2009, 3:53 PM

I probably should lower them a little bit on the right side....:D

hfleming

08-19-2009, 4:05 PM

2 x 400w on a 150 gallon and 55 gallon sump (sump in basement).

When I had the lights hanging and no canopy (open top) I only had to run one fan in the summer and no fans in the winter.

I now have the lights enclosed inside a canopy. I have had to add a few more fans.

JessPete

08-19-2009, 4:36 PM

2 x 250 on a 90G, 8" off water. With one fan linked into a controller, we swing from 79.0 to 79.5 during the summer. Also have three mag drive pumps in the sump and two 70 watt halides on nano in system.

theplantman

08-19-2009, 4:46 PM

run a single 250 over my 34gal cube. 8" off the water with a single 3" fan blowing across surface. Low temp 77.8 high 79.1 in middle of summer with room temp at 76.

bclark7169

08-19-2009, 6:09 PM

I have a 125 with 40 gallon sump 20 gallon ref. and a 20 gallon frag all run together with 3 250w halides and no chiller and it stays 79

BASSCYN

08-19-2009, 7:02 PM

Whew!
Thanks guys I feel much better.

Let there be light!:yes:

cr500_af

08-19-2009, 7:04 PM

Mine (2x250 on a 90) will stay under "the mark" (82) without one, but the chiller runs probably 10min every 2 hrs to keep it at 80, this with an ambient temp of 78.

Amici

08-19-2009, 8:25 PM

I have a chiller with 2x250w on my 90 but never seen it run. I have two window fans in the back of the canopy blowing in and the top has slates that hot air flows out of. I even am going to tie in my 60g cube into it so I will have roughly 180g of volume.

bobz

08-19-2009, 9:36 PM

I'm running three 250W MH and two 54W VHO on my 210. I have not had to use a chiller but I have about 450 gallons moving through the system

molson

08-19-2009, 10:10 PM

Running 3x250's, one on the frag tank and 2 on the display with no fans or chiller, temp never tops 79.2 but being from north of the Mason-Dixon line my house is at 70 degrees constantly.

Smoothie

08-20-2009, 12:12 AM

Keep me updated on that aquamedic light. About to run the 3x250 2x150 myself

BASSCYN

08-20-2009, 6:51 AM

I'm running three 250W MH and two 54W VHO on my 210. I have not had to use a chiller but I have about 450 gallons moving through the system

I assume the larger your sump area is, in ratio to your display...the cooler your system will stay? Thats my hope anyway.
I will initially have 2 70 gallon rubbermaid stock tanks behind the wall, that realistically will probably hold maybe 40 gallons each. Soon after I will tie in a refugium tank...maybe even a display macro tank.

But for now a 175 display with sand and rocks...what...maybe 150 actual gallons?

So...150 display...80 sump.

Hopefully wont have to spend that chiller money!

BASSCYN

08-20-2009, 6:57 AM

Keep me updated on that aquamedic light. About to run the 3x250 2x150 myself

The only thing that worries me about this fixture is it does not appear to be very well ventilated. Its sealed pretty tight. The only vents are on the ends. No fans either. We'll see.

I honestly see a major canopy build on down the road.

But I did just installed 4 new Phoenix 14k's last week and fired it up.

Whoa!!
I had to put my shades on:shades:

Smoothie

08-20-2009, 10:11 AM

That's what I put in mine for the 250's. Ushio 20k for the 150's

ares

08-21-2009, 10:52 AM

I ran 2x250w halides on a 75, worked fine with a fan. then I had 4x250w on my 240, no fans, it was getting to 84-85degrees in May. I chose to run a chiller instead of fans from there, I think fans would have dealt with it, but I prefer to be able to set the temp at 78 flat, less evaporation, noise, more reliable.

with fans IME, it was more like, see how cold you can get it overnight so when it makes its run up during the day it only tops out around 80-81... a few hot days or hot nights and it would creep up without the running start around 78-79 overnight.

stickx911

08-21-2009, 11:18 AM

1 250w on a 30 hex. I did need a fan, but I was able to keep it under 81 at its peak. I had to top off a lot though.